Spanish to English Dictionary (Diccionario Español-Inglés)

Ultrasound

Sound waves with frequencies higher than the upper limit of human hearing, typically above 20,000 hertz.

Unaccounted-delivery

A shipment, package, or consignment that has arrived or been handed over without proper documentation, inventory tracking, or reconciliation in the system.

Under-the-Wire

Describing a situation where something is done just before a deadline or at the last possible moment.

Underclassmen

Students in the lower grades of a school, typically referring to freshmen and sophomores.

Underground economy

Economic activities that are not monitored or regulated by the government.

Underlying Structure

The basic or fundamental framework that supports or underpins a system, concept, or theory.

Understand

To perceive the intended meaning of words, spoken language, or actions; to comprehend.

Understanding

The ability to understand something; comprehension.

Understood

Fully comprehended or grasped mentally; mutually agreed upon without explicit expression.

Unexpected event

An occurrence, incident, or happening that was not foreseen or predicted beforehand.

Unhandselled

Not yet used, tried, or experienced for the first time.

Unhealthiness

The state of being unhealthy or detrimental to health.